Your private key
lives inside
your eSIM.
FIX is an open protocol for key storage, signing, and authentication on the eSIM's secure element. Any operator can deploy it. Any app can consume it. Private keys are generated on-chip and never leave.
A hardware wallet that's always with you.
The first thing we ship is the FIX eSIM. It installs as a secondaryprofile on any dual-eSIM phone, alongside the user's primary carrier. On-chip private-key storage, transaction signing, and an encrypted vault — running on Monogoto's global backbone with data roaming in 180+ countries.
You switch it on when you need to sign, off when you don't. Humans use it as a wallet. Agents use the same applet on server-side eSIMs — same signing path, same protocol, different form factor.
Apps integrate in a few SDK calls. Wallets, identity platforms, login, 2FA, corporate signing — all route through the applet on the eSIM.
Operators sell FIX into their own user bases.
FIX launches its own eSIM as the reference product. Once it is live, operators of any tier can deploy the applet or resell the eSIM to their own customers. MNOs, MVNOs, and resellers all plug in the same way — the applet, the SDK, and the spec are open source.
Monogoto ships FIX-enabled eSIMs to their clients; Annatel OTA-deploys to their Israeli subscribers; DIDWW can launch their own FIX-enabled eSIM with full voice when they're ready. Each runs their own deal on their own terms.
A chain that carries identity, vault, and policies.
Phase 3 extends the protocol onto a public chain — anyone can participate. It holds what the SIM can't: 883 identity records, encrypted vaults, policy contracts, and attestations written by third parties — for humans and agents alike.
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FIX ships its own eSIM. Three partners make it possible.
Ships the FIX eSIM globally. SM-DP+, 180+ countries, roaming data. Can also sell FIX-enabled eSIMs to their own clients.
OTA deploys the FIX applet onto Israeli subscribers. Potential core infrastructure for FIX.
Issues the 883 numbers that become on-chain DIDs. Can later ship their own FIX eSIMs with full voice capability.
These are the first three. Any other MNO or MVNO can onboard later — the applet, the SDK, and the spec are open source. Operators adopt on their own commercial terms.
Built with the operators who already run the rails.
Phase 0 partner conversations are happening now. See the role, the commercial structure, and the open questions for each party.